Leaders

Senate

For the remainder of this Congress, the office rotated among five Senators. The Senate at that time was split between progressive Republicans, conservative Republicans, and Democrats. Each put forth a candidate, and the ballots were deadlocked until August 1911 when a compromise was reached. Democrat Augustus Bacon served for one day on August 14, 1911, and thereafter he and four Republicans rotated holding the seat for the remainder of the Congress. These Republicans were: Charles Curtis, Jacob H. Gallinger, Frank B. Brandegee, and Henry Cabot Lodge.

Minority (Republican) leadership

Members

Senate

At this time, most Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. A few senators were elected directly by the residents of the state. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election, In this Congress, Class 2 meant their term ended with this Congress, requiring reelection in 1912; Class 3 meant their term began in the last Congress, requiring reelection in 1914; and Class 1 meant their term began in this Congress, requiring reelection in 1916.

Changes in membership

Senate

There were 20 changes: 6 deaths, 2 resignations, 1 invalidated election, 6 appointees replaced by electees, 4 seats added from new states, and 1 seat vacant from the previous Congress. Democrats had a 4-seat net gain, and no other parties had a net change.

Committees

Lists of committees and their party leaders, for members (House and Senate) of the committees and their assignments, go into the Official Congressional Directory at the bottom of the article and click on the link (6 links), in the directory after the pages of terms of service, you will see the committees of the Senate, House (Standing with Subcommittees, Select and Special) and Joint and after the committee pages, you will see the House/Senate committee assignments in the directory, on the committees section of the House and Senate in the Official Congressional Directory, the committee's members on the first row on the left side shows the chairman of the committee and on the right side shows the ranking member of the committee.